Worksheet 7: Centripetal MotionQuestions1. You are thrust back into your seat because your seat is accelerating forwards whileyou are trying to continue at the same velocity you were traveling at before.Thecar exerts a forward force on you, while by Newton’s 2ndlaw, you exert a equal andopposity reaction force backwards on the car.2. Here, a similar thing is happening. The car is accelerating because the direction ofthe velocity is changing.You however, want to go in a straight line, which if theseat belt didn’t stop you, would lead outside the car, tangent to the path the car isfollowing. This leads you to feel as though you are being thrust to the side of thecar, while in actuality you are traveling in a straight line and the car is accerating.3. As the washing machine spins, objects in the machine are put in motion, whichin general, will cause them to move radially outwards.The water will continueunhindered through the holes placed in the cylindrical tub, while the clothes getcaught and are forced (in the physics sense) to stay inside the cylindrical tub.

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